While it would be snifty, they've explained previously just how enormous an undertaking it would be, and truly, it would take a lot of manhours that could be better put to use in other areas. I can live without that particular bit of customization in favor of some of the other things that truly need to get done.

I don't think this is a good idea at all. I used to play on Ragnarok Online private servers, most of which had this, and it was awful. The majority of players had theirs either 100% black or a ridiculously bright neon color.